393 %
Iodine contributes to normal cognitive function and to normal thyroid function.
How many calories are in grilled haddock?
137kcal
in a 140 g fillet
98 kcal per 100 g.
Source: UK CoFID 2021, record 16-376, 11 analysed samples. Checked 5 October 2026.
0.42 gFat
33.5 gProtein
0 gFibre
393 %Daily iodine
What’s in a 140 g fillet
More than half of a fillet is water, which is why the calories stay low. What is left is mostly protein.
- 0.42 gFat
- 33.5 gProtein
- 106 gWater
Below average for fish and seafood
Haddock is 98 kcal per 100 g. The 170 fish and seafood in this database average 138.
Haddock98
Fish and seafood average138
Low in sugar and salt
Low sugars and low salt by UK labelling rules, per 100 g.
Sugars, per fillet0 g
Salt, per fillet0.32 g
Vitamins and minerals in haddock
Five of the 21 reach the “high in” level, led by iodine.
A source of
Only a trace
- Vitamin D
- Vitamin C
Show all 21 with amounts
Iodine0.589 mg, 393 %
Vitamin B120.00336 mg, 134 %
Selenium0.0672 mg, 122 %
Niacin (vitamin B3)11.6 mg, 73 %
Phosphorus325 mg, 46 %
Potassium606 mg, 30 %
Vitamin B60.41 mg, 29 %
Chloride182 mg, 23 %
Riboflavin (vitamin B2)0.2 mg, 14 %
Magnesium46.2 mg, 12 %
Thiamin (vitamin B1)0.13 mg, 11 %
Zinc0.7 mg, 7 %
Pantothenic acid (vitamin B5)0.39 mg, 6.5 %
Vitamin E0.73 mg, 6.1 %
Biotin0.00238 mg, 4.8 %
Folate0.0084 mg, 4.2 %
Calcium28 mg, 3.5 %
Copper0.03 mg, 2.8 %
Iron0.24 mg, 1.7 %
Manganese0.01 mg, 0.7 %
Vitamin A0.0014 mg, <1 %
Badges use the UK legal thresholds per 100 g: 15 % of the reference intake for “source of”, 30 % for “high in”. A trace is shown as “trace” and never counts.
What haddock doesn’t give you. And where to find it.
No recorded vitamin D or vitamin C, and only under 1 % of the vitamin A reference intake per 100 g.
Vitamin D
Tracein haddock
Find it inBloater, grilled500 % per 100 g
Vitamin C
Tracein haddock
Find it inCherries, West Indian2150 % per 100 g
Vitamin A
<1%in haddock, per 100 g
Find it inLiver, calf, fried3152 % per 100 g
100 mgVitamin C, 125 %
0.075 mgSelenium, 136 %
0.00125 mgVitamin D, 25 %
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Haddock against other fish and seafood
Per 100 g, haddock has the most iodine of the 5 here, ahead of mussels in white wine sauce (cooked).
0.421mg
0.282mg
0.218mg
0.151mg
0.14mg
Haddock, flesh only, grilledthis page
Mussels in white wine sauce, cooked−0.139 mg
Crab, purchased cooked−0.203 mg
Coley, baked−0.27 mg
Mussels, raw−0.281 mg
All values per 100 g, from the same dataset. Differences are against haddock.
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Questions about haddock
What the numbers say to the questions people actually search.
How many calories are in a portion of haddock?
A typical portion (140 g, one fillet) gives 137 kcal. Per 100 g the figure is 98 kcal.
Is haddock high in iodine?
Yes. Haddock, flesh only, grilled has 0.421 mg iodine per 100 g, 281 % of the NRV, above the 30 % threshold for a “high in” claim.
Does grilling change the folate in haddock?
Yes. Per 100 g, folate goes from 10 mg raw to 0.006 mg grilled. Part of that is the vitamin or mineral itself changing, part is the change in water content.
Which vitamins and minerals does haddock have most of?
By share of the daily reference intake: iodine (0.421 mg, 281 %), vitamin B12 (0.0024 mg, 96 %) and selenium (0.048 mg, 87 %) per 100 g.
How these numbers were made
Every figure comes from the UK Composition of Foods Integrated Dataset (CoFID), 2021 edition, record 16-376, Haddock, flesh only, grilled, 11 analysed samples, published by Public Health England under the Open Government Licence v3.0. Main data references: DH, Nutrient analysis of fish and fish products, 2013. Values are per 100 g of the edible part; a fillet is 140 g, one fillet, the usual UK portion for fish and seafood. Edible proportion: 88 % of the weight as bought is eaten. Reference intakes follow Regulation (EU) 1169/2011 Annex XIII as retained in GB law; “source of”, “high in” and “low” follow Regulation (EC) 1924/2006, assessed per 100 g. Function lines are the authorised wording from the GB register of nutrition and health claims, credited to the nutrient. Energy is rounded to the whole kcal and kJ; other amounts to one decimal, or two below 1. A trace is shown as “trace” and never gets a figure or a badge; a nutrient never analysed is left off the page. We start from the dataset’s 2,887 records and keep 2,322: records weighed with bone, shell or skin, alcoholic drinks, infant foods, brand-named products, records with fewer than eight measured vitamins and minerals and near-identical variants are left out. Group context uses the 170 fish and seafood kept from the dataset; a rank counts only the foods with a measured figure for that nutrient. Food images are illustrations from Ingredient Atlas, released under CC0; they show the food, not the measured sample, and where no illustration of the exact food exists the nearest one is shown (here: Haddock Fish). Checked 5 October 2026. Contains public sector information licensed under the Open Government Licence v3.0.
More fish and seafood
From the same group, with calories per 100 g, and the foods with the most iodine.
More fish and seafood
- Calamari, coated in batter, baked288 kcal
- Crab, brown meat, purchased cooked145 kcal
- Lemon sole, goujons, baked187 kcal
- Plaice, steamed91 kcal
- Salmon, smoked (hot-smoked)186 kcal
- Squid, raw81 kcal
- All 170 fish and seafood